.ART. 25 THE AMPHIPOD FAMILY BATEIDAE SHOEMAKER 6 



1906. Batea catharinensis-\-B. sectinda Stebbing, Ampbipoda, I, Gamiua- 



ridea. Das Tierreich, vol. 21, pp. 355, 356 ; 729. 

 1913. Batea secunda Sumner, Osbuen, and Cole, Bulletin of the Bureau 



of Fisheries for 1911, vol. 31, pt. 2, p. 651. 

 1918. Batea secunda Kunkei., Conn. State Geological and Natural History 



Survey, Bulletin No. 26, p. 89, fig. 18. 

 1921. Batea catharinensis Shoemaker, Univ. of Iowa Studies. Studies in 

 * Nat. Hist., vol. 9, no. 5, p. 100. 



Head; rostrum reaching to about two-thirds the length of the first 

 joint of antenna 1, slightly curved dov>'nward, spear-shaped, sharply 

 pointed; lateral angle rather blunt; lower anterior angle subquad- 

 rate. Eyes large, dark, reniform, larger in male than in female. 

 Antenna 1 and 2 longer in male than in female. Antenna 1, second 

 joint narrower and a little shorter than first, third joint narrower 

 than second and about one-third as long, under edge of first and 

 second joints in male bearing several fascicles of short setae, flagel- 

 lum many- jointed, setae of alternate joints directed forward and 

 backward in male and forward and downward in female, alternate 

 joints in female bearing also sensory filaments. Antenna 2, fifth 

 joint narrower but very little shorter than fourth, upper edge of 

 fourth and fifth joints in male bearing several fascicles of short 

 setae, lower edge of fourth and fifth joints in female bearing several 

 fascicles of long setae, flagellum many-jointed, alternate joints in 

 female bearing two long and one short seta on under side. Upper 

 lip rounded and bearing a fringe of fine setules on rounded apex. 

 Mandible, cutting edge narrow, sharply toothed throughout, acces- 

 sory plate also toothed, five serrated spine teeth in spine-row of left 

 mandible and four in that of right, molar strong, prominent, bor- 

 dered by a single plumose setule and a row of fine teeth on upper 

 edge, a strong protuberance between molar and base of palp, palp 

 with second joint stouter but very little longer than third, both sec- 

 ond and third joints provided on their front margins with numerous 

 bristles. Maxilla 1, outer plate with 10 or 11 toothed spines, 

 inner with four or five plumose setae, palp with first joint about one- 

 half the length of second, which is provided distally with a few 

 short, blunt spine-teeth and a few short setae. Maxilla 2, outer 

 plate slightly wider and longer than inner, armed distally with many 

 long curved bristles, inner plate armed distally with many bristles 

 and two plumose setae. Maxilliped, outer plate reaching about 

 three-fourths the distance along the second joint of palp, somewhat 

 truncated distally and provided on the truncated end with a few 

 plumose setae, inner edge provided with about five odontoid spines 

 and a few short, curved, blunt bristles, inner plate provided on its 

 truncated end with three short, stout odontoid spines, and on the end 

 and inner edge with ])lumose setae, palp with third joint provided 

 with a stout, curved claw. Lower lip, outer lobes large and distally 

 rounded, inner lobes small, mandibular processes well developed. 



